Well-casing puller



J. @LEWIS WELL CASING FULLER Filed'Aug. 2e, 1924 may' 22, '15225;

Patented May 12, 1925. il i l 1,537,359

UNITED STATES PATENT OFFICE.

JOSEPH C. LEWIS, OF FARMINGTON, NEW MEXICO.

WELL-CASING FULLER.

Application filed August 26, 1924. Serial No. 734,278.

To all 207mm t may concern: slots, into engagement with the interior of Be it known that I, JOSEPH C, Lnwrs, a a well casing, upon longitudinal movement citizen of the United States, residing at ofthe stem in an upward direction. Farmington, in the county of San Juan, The upper end of the stem is slightly 5 State of New Mexico, have invented certain enlarged, as indicated at 16, and secured at 55 new and useful Improvements in Vell-Cas their opposite ends to this enlargement 16, ing Pullers; and I do hereby declare the foland to the upper end of the casing 12, are lowing to be a full, clear, and exact descripthe coil springs 17, which normally and tion ot the invention, such as will enable yieldably support the casing 12 in elevated l0 others skilled in the art to which it apperposition, whereby to maintain the blocks 14 60 tains t0 make and use the same. in neutral position, or such position as will This invention relates to new and useful prevent them engaging the well casing. improvements in well tools, and particularly Encircling the upper end of the stem 10, to well casing spears. and housing the coil springs 17, is a sleeve 15 One object of the invention is to provide a 18, of somewhat greater diameter than the 65 tool which is adapted for pulling a well cas- Stem, the upper end of this sleeve being sew ing from a well. cured to the upper end of the stem. The Another object is to provide a device of upper end of the Stem l0 is adapted to be this character by means of which the well connected to a sucker rod, in the usual casing may be split or perforated. manner 70 Another object is to provide a device of Upon letting the device down into a well this character by means of which a well cascasing, with a sudden downward and then ing may be straightened, or the bulges or a sudden upward jerk, the casing 12 will dents removed, in an operation known as drop within the well casing, A and immeswaging diately be moved upwardly by the sprin 's 75 Other objects and advantages will be ap- 17, with the result that the blocks 14 will e parent from the following description when forced out by the tapered stem, into bitingtaken in connection with the accompanying engagement with the interior of the well casdrawing. ing, thus permitting the easy pulling of the In the drawing: casing from the well. The sleeve 18 serves 80 Figure 1 is an elevation of a casing spear as a stop to limit the upward rebound of the made in accordance with the present invencasing 12. By substituting cutting blades fion, and adapted t@ grasp and remove a well for the blocks 14C, and manipulating the decasing. vice in the manner above described, slots or Figure 2 is a vertical longitudinal secperforations may be formed in the well 85 tional view on the line 2 2 of Figure 1. casing.

Referring particularly to the accompany- That is claimed is:

ing drawing, 10 represents the stem of the 1. A well casing spear including a tapered spear, the same being tapered toward its stem, a casing slidable on the stem, wedge upper end, and having the pointed head 11 blocks in the casing, resilient suspending 90- on its other end. Slidable on the stem l() is connections between the casing and stem, a cylindrical casing 12, and formed in the and means on the stem for engagement by wall of this casing are the longitudinally exthe casing for limiting the movement of the tending elongated slots 18, in each of which casing in one direction on the stem. is disposed an externally toothed block 111. 2. A well casing spear including a tapered 95 The inner face of each of the blocks 1&1 is stem, a casing slidable on the stem and havformed on an inclination, as indicated at 15, ing wedge blocks therein, resilient connecto correspond to the inclination or taper of tions between the said casing and one end the stem 10, and adapted to be engaged by of the stem for suspending' the casing, and a the stem to project the blocks through the housing on the stem covering the resilient means, seid housing serving as e stop to limit the upward movement of the easing.

3. A Well casing Spear including e tapered stem, a easing slidable on the stem and having Wedge blocks therein arranged to be projected by the stern, Springs connected to the upper ends of vthe stern and easing whereby the easing is yieldebly suspended, and 'a VSleeve carried by the upper end of the 'stem 0 in covering relation to the sprlngs `and veerwing as a stop against the upward movement oi" the easing beyond a predetermined distance.

In testimony whereof, I aiiix my signature, in the presence of two Witnesses.

JOSEPH C. LEYIS.

V'itnesses E. P. Woons, RomxfC. Weens.l 

